TL;DRThe 20 lowest-added-sugar protein shakes in our catalog — every product here has 5g or less added sugar per serving, ranked ascending. Average across the full protein shakes category is 0.4g. The American Heart Association recommends kids ages 2–18 keep added sugar under 25g per day.
Most "kids protein shakes" are sugar bombs in disguise. The average dairy-based kids protein drink contains 10–15g of added sugar per serving — more than a soda — to mask the chalky protein taste. Pediatric guidelines (AAP, AHA) cap added sugar at 25g/day for kids 2–18, and zero for under 2. A single shake can blow past that limit before breakfast.
Of the 66 kids drinks we track that include any protein source, 0% exceed 5g of added sugar per serving. Average added sugar in the protein-drink subset sits at 0.4g per serving. The single highest-sugar kids protein drink in our pool is Ripple Kids Ripple Kids Original Plant-Based Milk at 5g.
For this hub we filtered to Tier A (sugar-free), Tier B (zero added sugar), and Tier C (1–3g added sugar) — protein drinks that meet a reasonable kid-snack bar. Hard cap at 5g added sugar; anything sweeter doesn't belong on a "no sugar for kids" list regardless of how much protein it carries. We kept both dairy and plant-based options; many parents prefer pea-protein or grass-fed whey for kids with milk sensitivities.
A few standouts. Iconic Kids Protein Shakes are 0g added sugar (allulose-sweetened) with 8g grass-fed milk protein plus organic vegetables. Ripple Kids Unsweetened Plant-Based Milk delivers 8g pea protein with 0g added sugar — top-9 allergen free. For older kids, Orgain Kids Organic Protein Shake (4g added sugar, organic milk protein) and the lower-sugar Orgain Organic Plant-Based shakes hold up. RXBAR Kids and TRUBAR Kids in bar form are alternative protein sources (8–14g protein) with 0–4g added sugar — useful when a drink isn't practical.
Below is every kids protein drink in our database at 5g of added sugar or less, sorted by added sugar ascending. Use it to pick a daily option (Tier A/B) vs an occasional one (Tier C) — and to spot the brands that hide 10–15g of sugar under the "natural flavor" line.
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Apple 100% Juice

Cure Hydration Kids
Cure Kids Electrolyte Drink Mix - Fruit Punch